{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T06:42:04Z","timestamp":1791096124437,"version":"4.1.0"},"reference-count":41,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2007,1,4]],"date-time":"2007-01-04T00:00:00Z","timestamp":1167868800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Intl Journal of Cancer"],"published-print":{"date-parts":[[2007,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Adult T\u2010cell leukemia (ATL) is a highly aggressive mature CD4<jats:sup>+<\/jats:sup> T\u2010cell malignancy that is etiologically associated with human T\u2010lymphotropic virus Type 1 (HTLV\u20101). ATL is characterized by frequent infiltration of lymph nodes, spleen, liver, skin and gut. Previously, we and others have shown that the majority of ATL cases are strongly positive for CCR4, which may explain the frequent skin invasion of ATL. Here, we examined whether ATL cells express CCR9, which is involved in T\u2010cell homing to the gastrointestinal tract. Human T cell lines carrying HTLV\u20101 consistently expressed CCR9 together with the HTLV\u20101\u2010encoded transcriptional activator Tax. Although ATL cells freshly isolated from peripheral blood hardly expressed CCR9, ATL cells cultured for 1 day consistently expressed CCR9 in parallel with the upregulation of Tax. Induction of Tax by Cd<jats:sup>2+<\/jats:sup> in JPX\u20109, a subline of Jurkat human T cell line carrying Tax under the control of metallothionein promoter, led to upregulation of CCR9. A luciferase reporter gene under the control of the CCR9 promoter was expressed by cotransfection of an expression vector for Tax or in Cd<jats:sup>2+<\/jats:sup>\u2010treated JPX\u20109 cells. Furthermore, immunohistochemical staining demonstrated that ATL cells infiltrating gastrointestinal tract were frequently positive for CCR9. Collectively, CCR9 is inducible in ATL cells expressing Tax and may play a role in the gastrointestinal involvement of ATL. \u00a9 2006 Wiley\u2010Liss, Inc.<\/jats:p>","DOI":"10.1002\/ijc.22483","type":"journal-article","created":{"date-parts":[[2007,1,4]],"date-time":"2007-01-04T22:13:14Z","timestamp":1167948794000},"page":"1591-1597","source":"Crossref","is-referenced-by-count":26,"title":["Expression of CCR9 in HTLV\u20101<sup>+<\/sup> T cells and ATL cells expressing Tax"],"prefix":"10.1002","volume":"120","author":[{"given":"Daisuke","family":"Nagakubo","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhe","family":"Jin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kunio","family":"Hieshima","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takashi","family":"Nakayama","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aiko\u2010Konno","family":"Shirakawa","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuetsu","family":"Tanaka","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hitoshi","family":"Hasegawa","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tomayoshi","family":"Hayashi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kunihiro","family":"Tsukasaki","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yasuaki","family":"Yamada","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Osamu","family":"Yoshie","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2007,1,30]]},"reference":[{"key":"e_1_2_5_2_2","doi-asserted-by":"publisher","DOI":"10.1182\/blood.V50.3.481.481"},{"key":"e_1_2_5_3_2","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.78.10.6476"},{"key":"e_1_2_5_4_2","doi-asserted-by":"publisher","DOI":"10.1146\/annurev.immunol.15.1.15"},{"key":"e_1_2_5_5_2","doi-asserted-by":"publisher","DOI":"10.1146\/annurev.immunol.19.1.475"},{"key":"e_1_2_5_6_2","doi-asserted-by":"publisher","DOI":"10.1182\/blood.V80.12.3205.3205"},{"key":"e_1_2_5_7_2","first-page":"4862","article-title":"Persistent 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